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Chemistry Chapter 1

QuestionAnswer
mixture a combination of two or more pure substances in which each substance retains its own identity
homogeneous uniform composition, well mixed
heterogeneous nonuniform composition, random placement
pure substance substance that has only one component
gas particles widely spread, no definite shape or value
liquid particles closer together, definite volume but no shape
solid particles very close together, definite volume and shape
error difference between the true value and estimation (random and systematic)
accuracy degree of agreement between the value and measured value
precision measure of the agreement and replica measurements
mass quantity of matter in an object
temperature degree of "hotness" of an object
energy the ability to do work and accomplish change (kinetic and potential)
intensive not dependent on amount (density and color)
extensive dependent on amount (mass and volume)
element on the periodic table
compound distilled water
mixture air
chemistry the study of matter
properties characteristics of matter
data individual results of a single measurement
physical property observed without changing composition or identity of a substance
physical change a recognizable difference in appearance without changing composition
chemical property result in a change in the composition and can be observed by a chemical reaction
chemical change process in rearranging, removing, replacing, or adding atoms to produce a new substance
Celsius to Fahrenheit F-32 / 1.8
Fahrenheit to Celsius 1.8 (C) + 32
Created by: btephbock